Hoosiers, having been spoiled by this week's near-record warmth, will get a rude awakening beginning Friday, as the leading edge of a vast pool of chilly air pours over Indiana.
This chilly air promises to bring Indiana its lowest temperatures of the season thus far.
Temperatures Friday will hold up to 25 degrees below the balmy upper 70s and lower 80s reached on Thursday.
Put another way, highs will be in the lower to mid-50s in most of northern and central Indiana.
Indianapolis hit 78 degrees on Wednesday, and was expecting at least as high on Thursday. Friday's forecast was for a high of 54 degrees under rainy skies.
The agent for change, a cold front plowing into the Midwest from the Great Plains, will cross the Hoosier State with a band of rain and even thunderstorms Thursday night and early Friday.
Slowing of the front west of the state will allow rainy weather to linger in the afternoon in central and eastern Indiana.
Meanwhile, the coldest weather will not begin until early next week, when all but southernmost Indiana can look forward to highs in the 40s.
A change in the weather pattern will bring an extended period of dry and sunny conditions over much of the south-central United States.
SpaceX is preparing to launch another rocket into space, and as they do so, they will be monitoring the weather carefully to make sure that it does not interfere.
Residents of the southeastern United States may feel like the calendar has flipped ahead to Memorial Day with warm and muggy weather in place for the start of May.
May is picking up where April left off with record-challenging warmth surging back into the northwestern United States.
Dry days will be hard to come by in the northeastern United States for the first week of May as storm systems bring frequent rain to the region.
Torrential rain triggered flooding across southern Louisiana over the weekend, submerging streets and closing major highways.
Eastern U.S. (1812)
May snowstorm swept from Philadelphia northeastward to Maine. Snow covered ground in New York City; 12" accumulated near Keene, New Hampshire, 9" fell at Waltham, Mass., near Boston.
Severe snowstorm: 33.8" in Havre (24.8 inches of which fell in 24 hours).
New Orleans, LA (1978)
Persistent thunderstorms caused worst flooding in 30 years at New Orleans; lightning ignited an oil storage tank at Covent, LA.